Hmm. Also if this cycle ( his up days and triggered moods/behaviors followed by flowers and bath bombs) becomes a pattern, it’s definitely not lovely.
Lovely is when it happens when things are going well. Just because he wants to. For no specific reason. If you are asking yourself if it’s manipulative, that’s possibly that little voice at the back of your head warning you.
he asked me if I think it is ok for me to leave the house(like I did this past weekend when I wasn't included in the family meeting) just because I'm hurt.

oh wow. This sounds controlling. Did it feel controlling? What felt “off” about that comment to you? In a healthy relationship one partner does not tell another when its ok or not ok to leave the house. That would be an imbalance of power and/or control.
In fact, if one person is hurting, taking a “time out” for oneself is a smart thing to do. It gives emotions time to calm down, so the rational mind can take over again.
Was the family meeting one you think you should have been included in?
If your leaving the house is triggering for him, than that sounds like a project for him to deal with. Does he have some “work “ to do there? Your movement and freedom can not be restricted because of his triggered feelings. That is a

. You are not responsible for the things in his past that have resulted in him having triggers in the first place. You have the right to come and go from your own house when you want and need to.